David W Parker - Developer

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Project Euler #8

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In JavaScript:

(function(){
  //assign the whole thing into a string
  //convert the string into an array
  //loop through the array
  //starting with the first 5, add up the values of the array and store it
  //compare the next set with the previous set, if it's bigger, store it, it smaller, toss it out
  //99879 - 42
  var number = "7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450";
  var high = 0, five = [];

  for (var i = 0; i < number.length; i++){
    var c = number.charAt(i);
    five.push(c);
    if (five.length > 5){
      five.shift();
    }
    if (five.length === 5){
      var total = 0;
      for (var j = 0; j < five.length; j++){
        total += five[j] - 0;
        if (total > high){
          high = total;
        }
      }
    }
  }
  document.write(high, "<br />");
})();

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